Okay, having taken Wilberforce (my omega) to Opel in Germany, they completely revamped my car with a full original exhaust system (middle 500 euro) rear (285 euro) full service (350 euro), but in the process it turned out that it was the coil beginning to show its age and that too had to be replaced (350 euro) on top of new rear brake pads. So the answer to anyone else having similar issues is this.. check sensors, spark plugs, ht leads, failing that, it's the Bosch coil pack that without fail always goes around the 50,000 mile mark. After having this replaced, runs like a dream and despite the major fork out in cash, had it done properly by the sausage guzzlers and now have a near new mechanically sound omega.
altogether the damage was 1,650 euro (tax free)
hope this helps with ideas of prices if anyone finds similar problems with theirs and helps determine pants performance.
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Topic: Lack Of Power On Acceleration (Read 2189 times)